CN110267297A - A kind of method and system of anti-electromagnetic interference - Google Patents
A kind of method and system of anti-electromagnetic interference Download PDFInfo
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- CN110267297A CN110267297A CN201910422755.3A CN201910422755A CN110267297A CN 110267297 A CN110267297 A CN 110267297A CN 201910422755 A CN201910422755 A CN 201910422755A CN 110267297 A CN110267297 A CN 110267297A
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- mobile phone
- phone terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of method and system of anti-electromagnetic interference, comprising: collects each anti-interference angle value of all devices in the room that need to be carried out wireless communication, and chooses the minimum anti-interference angle value in each anti-interference angle value；Measurement in normal working conditions, mobile phone terminal transmission power from high to low when the corresponding each field strength peak of each transmission power level；Judge whether each field strength peak is all larger than minimum anti-interference angle value, if not, the corresponding transmission power of any field strength peak in minimum anti-interference angle value will be then less than in each field strength peak as preset transmission power, and by mobile phone terminal transmission power adjustment to preset transmission power；If so, installing isolating device additional by transmission power adjustment to minimum emissive power, and at the mobile phone terminal position that the corresponding field strength peak of minimum emissive power is greater than the minimum anti-interference angle value.The present invention is realized in the case where not generating electromagnetic interference to nuclear power plant's important system equipment, and user is able to use mobile phone terminal and carries out two-way communication.
Description
Technical field
This technology invention belongs to npp safety field, and in particular to a kind of method and system of anti-electromagnetic interference.
Background technique
For the needs for meeting production scheduling commander and emergency response, nuclear power plant must be equipped with a set of wireless communication system, with dry
Missing and publication nuclear emergency information are called, and mobile data transfer service is provided.Under normal circumstances, wireless communication system is double
To communication pattern, the physical principle of electromagnetic induction can occur with metallic conductor based on radio wave, mobile phone terminal emits wireless
Signal may cause electromagnetic interference to nuclear power plant's important system equipment, to threaten the safety in production operation of nuclear power plant.
In the prior art, warning line is drawn around the important system equipment, it is specified that mobile phone user must not enter in line uses
Mobile phone.
Following defect exists in the prior art: mobile phone may be carried along into warning line in non-subject intent by user
It is interior, cause people because of failure event.
Therefore, in order to ensure not generating electromagnetic interference to nuclear power plant's important system equipment in mobile phone, urgent need is sought a kind of anti-
The method and system of electromagnetic interference, in the case where not generating electromagnetic interference to nuclear power plant's important system equipment, user can make
Two-way communication is carried out with mobile phone terminal.
Summary of the invention
Mobile phone may be carried along by the present invention for the user in the presence of the prior art in non-subject intent
In warning line, causes people because of technical problems such as failure events, provide a kind of method of anti-electromagnetic interference, comprising: step S1, receive
Collect each anti-interference angle value of all devices in the room that need to be carried out wireless communication, and chooses the minimum in each anti-interference angle value
Anti-interference angle value；Step S2, field strength measurement device is close to mobile phone terminal surface, measured in normal working conditions, mobile phone terminal
Transmission power from high to low when the corresponding each field strength peak of each transmission power level；Step S3, judge each field strength
Whether peak is all larger than the minimum anti-interference angle value, if it is not, will then be less than in each field strength peak described minimum anti-
The corresponding mobile phone terminal transmission power level of any field strength peak in angle value is disturbed as preset transmission power level, and by mobile phone
The transmission power adjustment of terminal is to preset transmission power level；If so, by the transmission power adjustment of the mobile phone terminal to most
Small transmission power level, and it is greater than the minimum immunity to interference in the corresponding field strength peak of the mobile phone terminal minimum emissive power value
Install isolating device at the mobile phone terminal position of value additional.
Further, the method also includes: step S4, judgement install additional isolating device after mobile phone terminal working normally
Under the conditions of, whether the corresponding field strength peak of mobile phone terminal minimum emissive power value is greater than the minimum anti-interference angle value；If so,
Increase the thickness of the isolating device, if it is not, then terminating.
Further, the thickness for installing isolating device additional should meet the minimum hair of the mobile phone terminal after installing isolating device additional
It penetrates the corresponding field strength peak of power and is less than the minimum anti-interference angle value.
Further, in the installation site of the base station communicated with the mobile phone terminal and the room that need to be carried out wireless communication
The linear distance of all devices is greater than theoretical minimum range.
Further, the theoretical minimum range is obtained by theoretical calculation, meets the anti-interference of all devices in room
Degree requires.
Further, the step S2 further include: by field strength measurement device along mobile phone terminal surface 360 degree rotation, measurement
Mobile phone terminal transmission power from high to low when the corresponding each field strength peak of all directions.
On the other hand, the present invention also provides a kind of systems of anti-electromagnetic interference, comprising: anti-interference angle value collection module is used
In each anti-interference angle value of all devices in the room that collection need to carry out wireless communication, and choose in each anti-interference angle value
Minimum anti-interference angle value；Field strength measurement device is close to mobile phone terminal surface, for measuring normal by field strength peak measurement module
Under operating condition, mobile phone terminal transmission power from high to low when the corresponding each field strength peak of each transmission power level；First
Secondary judgment module connects the anti-interference angle value acquisition module and field strength peak measurement module, for judging each field strength
Whether peak is all larger than the minimum anti-interference angle value, if it is not, will then be less than in each field strength peak described minimum anti-
The corresponding mobile phone terminal transmission power level of any field strength peak in angle value is disturbed as preset transmission power level, and by mobile phone
The transmission power adjustment of terminal is to preset transmission power level；If so, by the transmission power adjustment of the mobile phone terminal to most
Small transmission power level, and it is greater than the minimum immunity to interference in the corresponding field strength peak of the mobile phone terminal minimum emissive power value
Install isolating device at the mobile phone terminal position of value additional.
Further, the system also includes: second of judgment module connects the first time judgment module, for sentencing
The disconnected mobile phone terminal installed additional after isolating device in normal working conditions, the corresponding field strength highest of mobile phone terminal minimum emissive power
Whether value is greater than the minimum anti-interference angle value；If so, increasing the thickness of the isolating device.
Further, the thickness for installing isolating device additional should meet the minimum hair of the mobile phone terminal after installing isolating device additional
It penetrates the corresponding field strength peak of power and is less than the minimum anti-interference angle value.
Further, in the installation site of the base station communicated with the mobile phone terminal and the room that need to be carried out wireless communication
The linear distance of all devices is greater than theoretical minimum range.
Further, the theoretical minimum range meets the immunity to interference requirement of all devices in room, is counted by theory
It calculates and obtains.
Further, the field strength peak measurement module further include: automatic rotating device connects field strength measurement device,
It is each when for field strength measurement device along mobile phone terminal surface 360 degree rotation, to be measured mobile phone terminal transmission power from high to low
The corresponding each field strength peak in direction.
Technical solution provided by the invention has the benefit that the present invention for the user in the presence of the prior art
Mobile phone may be carried along into warning line in non-subject intent, cause people because of technical problems such as failure events, provide
A kind of method and system of anti-electromagnetic interference, first chooses the installation site of base station, is larger than and meets in room
The minimum range that each equipment immunity to interference requires, it is ensured that it is dry that base station generates electromagnetism to each equipment in room when being communicated, not
It disturbs, secondly, the transmission power to mobile phone terminal is adjusted, it is ensured that, will not when it is communicated with suitable transmission power
Electromagnetic interference is generated to equipment each in room, is achieved under the EMC Requirements for sufficiently meeting nuclear power plant's important equipment,
User can carry out two-way communication using mobile phone terminal everywhere in corresponding room.
Detailed description of the invention
Fig. 1 is a kind of method flow diagram for anti-electromagnetic interference that the embodiment of the present invention one provides；
Fig. 2 is the structural schematic diagram for the automatic rotating device that the embodiment of the present invention one provides；
Fig. 3 is the position signal that the mobile phone terminal highest field intensity value that the embodiment of the present invention one provides is greater than minimum anti-interference angle value
Figure；
Fig. 4 is that the one kind for the isolating device that the embodiment of the present invention one provides adds mode；
Fig. 5 is that the another kind for the isolating device that the embodiment of the present invention one provides adds mode；
Fig. 6 is a kind of the functional block diagram of the system of anti-electromagnetic interference provided by Embodiment 2 of the present invention.
Specific embodiment
Mobile phone may be carried along into warning in non-subject intent to solve the user in the presence of technology
In line, cause people because of technical problems such as failure events, the present invention is intended to provide a kind of method and system of anti-electromagnetic interference, is realized
Under the EMC Requirements for sufficiently meeting nuclear power plant's important equipment, user can in corresponding room everywhere using mobile phone terminal into
Row two-way communication.Its core concept is: the present invention pass through first theoretical calculation obtain base station setting position, with realize base station to
When mobile phone terminal emits signal, meet each equipment immunity to interference requirement in room；Secondly, by adjusting mobile phone terminal to Base Transmitter
Transmission power when signal, it is ensured that transmission power meets the immunity to interference requirement of each equipment, if being unable to satisfy requirement, passes through reduction
Meet the transmission power under regular service conditions or be that it meets immunity to interference requirement by adding xegregating unit, to realize true
It protects in the case where not generating electromagnetic interference to nuclear power plant's important system equipment, user is able to use mobile phone terminal and carries out two-way
The technical effect of letter.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
Present invention implementation provides a kind of method of anti-electromagnetic interference, as shown in Figure 1, this method comprises:
Step S1, each anti-interference angle value of all devices in the room that need to be carried out wireless communication is collected, and is chosen each anti-
Disturb the minimum anti-interference angle value in angle value；Minimum anti-interference angle value represents in room to the immunity to interference of the most sensitive equipment of electromagnetic compatibility,
Anti-interference angle value, which characterizes equipment, reduces the ability of runnability facing electromagnetic disturbance not, represent that equipment can bear normal
Maximum electromagnetic disturbance under operating condition, electromagnetic disturbance refer to it is any may cause device, equipment or system performance reduce or
Person is to biology or the abiotic dysgenic electromagnet phenomenon of generation；Wherein, anti-interference angle value can be obtained by equipment factory parameter；Room
Interior all devices are all satisfied EMC Requirements, and electromagnetic compatibility refers to that equipment or system meet the requirements in its electromagnetic environment
Operation does not generate the ability of intolerable electromagnetic interference to any equipment in its environment；
Step S2, measurement mobile phone terminal in normal working conditions, mobile phone terminal transmission power from high to low when each hair
Penetrate the corresponding each field strength peak of performance number；When measuring, field strength measurement device is close to mobile phone terminal surface along 360
Degree direction measures, it is ensured that the adequacy of measurement；Guarantee measurement the result is that mobile phone terminal one way or another emit signal pair
The field strength peak answered；It, can be by the way that automatic rotation be arranged to guarantee the accuracy of measurement and avoiding error caused by artificially measuring
Rotary device realizes that field strength measurement device is measured along 360 degree of mobile phone terminal surface direction；Specifically, as shown in Fig. 2, automatically
Rotating device includes pedestal 101, for fixing mobile phone terminal；Pick-up part 102, for picking up and fixing field strength measuring device,
And it is placed on mobile phone terminal surface；Driving part 103 connects pick-up part 102, for providing power for pick-up part；
Control unit 104 is connect with pick-up part 102, driving part 103 and mobile phone terminal respectively, is put for receiving pick-up part 102
It sets behind mobile phone terminal surface, the location information that mobile phone terminal surface issues, control unit 104 is according to location information, to driving
Component 103 issues instruction, and driving pick-up part 102 is moved along setting path, until the field strength of each position in mobile phone terminal surface
Peak is measured；
Step S3, judge whether each field strength peak is all larger than minimum anti-interference angle value, if it is not, then by each field strength highest
It is less than the corresponding mobile phone terminal transmission power of any field strength peak in minimum anti-interference angle value in value as preset transmitting function
Rate, and by the transmission power adjustment of mobile phone terminal to preset transmission power level；Specifically: passing through the control communicated with mobile phone terminal
The transmission power level of mobile phone terminal is adjusted in device processed, and mobile phone terminal works under this preset transmission power level, it is ensured that
Its corresponding field strength peak is less than minimum anti-interference angle value, it is ensured that the safe operation of equipment；If so, by the hair of mobile phone terminal
Power regulation is penetrated to minimum emissive power, and is greater than minimum anti-interference in the corresponding field strength peak of mobile phone terminal minimum emissive power
Install isolating device at the position of angle value additional.It should be understood that if each field strength peak is all larger than minimum anti-interference angle value, table
If bright use mobile phone terminal in this room, the equipment in room can be because mobile phone terminal emits signal and leads to the decline of performance, prestige
Coerce the safety in production operation of nuclear power plant；
Need further exist for explanation: the minimum anti-interference angle value that step S1 is obtained, each field strength highest that step 2 measures
Value, is sent to controller, and controller executes step S3, it may be assumed that whether equal judges automatically each field strength peak in the controller
Greater than minimum anti-interference angle value, if it is not, then controller will be less than any field strength in minimum anti-interference angle value in each field strength peak
The corresponding mobile phone terminal transmission power of peak is issued to base station and is instructed as preset transmission power, and base station receives control
The instruction of device sending simultaneously issues power adjustment instruction to mobile phone terminal, so that the transmitting function of mobile phone terminal of the work under the base station
Rate is adjusted to preset transmission power level by power adjustment instruction；If so, controller is issued by base station to mobile phone terminal
Instruction makes the transmission power adjustment of mobile phone terminal to minimum emissive power, and issues warning signal, and reminds user in mobile phone terminal
The corresponding field strength peak of minimum emissive power, which is greater than at the position of minimum anti-interference angle value, installs isolating device additional.
Further, after installing isolating device additional, further includes: step S4, the mobile phone terminal after isolating device is installed in judgement additional
In normal working conditions, whether the corresponding field strength peak of mobile phone terminal minimum emissive power value is greater than minimum anti-interference angle value；
Wherein, the basic thickness an of isolating device can be preset；If so, increase the thickness of isolating device, each increased thickness
Degree can be preset thickness, such as " 5mm ", can be set according to different needs；If it is not, then terminating.Wherein, it is isolated
Device can be the component for having isolation features made of the materials such as plastics, rubber.
Specifically, as shown in figure 3, by mobile phone terminal transmission power adjustment to minimum emissive power value, field strength measurement device
After abutting mobile phone terminal surface is measured along 360 degree of directions, and the result of measurement is sent to controller, controller is sentenced automatically
It is disconnected, work as judging result are as follows: mobile phone terminal has the field strength peak at several positions to be greater than minimum anti-interference angle value, then controller is sent out
It instructs out, adds isolating device at several positions of mobile phone terminal, wherein scheme that there are two types of the isolating devices added,
Middle one kind as shown in figure 4, add corresponding isolating device, at each isolating device and each position respectively at each position
With one heart, and the diameter of isolating device is greater than the diameter at several positions of mobile phone terminal, and another kind is as shown in figure 5, several
Integrally add an isolating device outside the region that a position is formed, be all contained at the position of several mobile phone terminals add every
In the region formed from device, wherein the isolating device added can be any shape, such as round or square.It is specific that is selected
The mode of kind and which kind of shape, can be chosen according to actual needs, and isolating device Pasting, on mobile phone terminal surface, convenience is fast
It is prompt.
Wherein, the final thickness for installing isolating device additional should meet the minimum transmitting function of the mobile phone terminal after installing isolating device additional
The corresponding field strength peak of rate is less than minimum anti-interference angle value.
Wherein, the installation site of the base station communicated with mobile phone terminal should meet its in the room that need to carry out wireless communication
The linear distance of all devices is greater than theoretical minimum range, when emitting signal to mobile phone terminal from base station for meeting, in room
Equipment runnability it is interference-free.
Further, the immunity to interference that the theoretical minimum range of base station and equipment in room meets all devices in room is wanted
It asks, is obtained by field strength calculation formula, field strength calculation formula is as follows:
Wherein, E is the anti-interference angle value of each equipment, and unit is every meter (V/m) of volt；K is constant, is passed in far field free space
It is actual emission power value that its numerical value of sowing time, which is equal to 7, P, and unit is watt (W), and d is distance of the equipment to base station.In practical application
In the process, E, P, k it is known that by above-mentioned formula can acquire all devices to base station distance d；The installation site of base station should meet
The required distance of all devices.
Embodiment two
The embodiment of the invention provides a kind of systems of anti-electromagnetic interference, are suitable for a kind of anti-electromagnetism shown in embodiment one
The method of interference, Fig. 6 are a kind of system function module schematic diagram of anti-electromagnetic interference provided by Embodiment 2 of the present invention, the system
Include:
Anti-interference angle value collection module 100, for collecting each anti-interference of all devices in the room that need to be carried out wireless communication
Angle value, and choose the minimum anti-interference angle value in each anti-interference angle value；Anti-interference angle value characterizes equipment and does not drop facing electromagnetic disturbance
The ability of low runnability represents the maximum electromagnetic disturbance under normal operating conditions that equipment can be born；And in room
All devices are all satisfied EMC Requirements, and electromagnetic compatibility refers to that equipment or system meet the requirements operation simultaneously in its electromagnetic environment
The ability of intolerable electromagnetic interference is not generated to any equipment in its environment；It is right in room that minimum anti-interference angle value represents
The immunity to interference of the most sensitive equipment of electromagnetic compatibility, it is all in room if meeting the immunity to interference to the most sensitive equipment of electromagnetic compatibility
Equipment is all satisfied immunity to interference requirement；
Field strength peak measurement module 200, for measuring mobile phone terminal in normal working conditions, mobile phone terminal emits function
Rate from high to low when the corresponding each field strength peak of each transmission power level；It is when measuring, field strength measurement device is tight
Patch mobile phone terminal surface is measured along 360 degree of directions, it is ensured that the adequacy of measurement；Guarantee measurement the result is that mobile phone terminal court
All directions emit the corresponding field strength of signal；To guarantee the accuracy of measurement and avoiding error caused by artificially measuring, can lead to
Setting automatic rotating device is crossed, realizes that field strength measurement device is measured along 360 degree of mobile phone terminal surface direction；
First time judgment module 300 connects anti-interference angle value collection module 100 and field strength peak measurement module 200, is used for
Judge whether each field strength peak is all larger than minimum anti-interference angle value, if it is not, will then be less than in each field strength peak minimum anti-
The corresponding mobile phone terminal transmission power of any field strength peak in angle value is disturbed as preset transmission power, and by mobile phone terminal
Transmission power adjustment to preset transmission power；Mobile phone terminal works under this preset transmission power, it is ensured that it is corresponded to
Field strength peak be less than minimum anti-interference angle value, it is ensured that the safe operation of equipment；If so, by the transmission power of mobile phone terminal
It is adjusted to minimum emissive power, and is greater than minimum anti-interference angle value in the corresponding field strength peak of mobile phone terminal minimum emissive power
Install isolating device at mobile phone terminal position additional.It should be understood that if each field strength peak is all larger than minimum anti-interference angle value,
If showing to use mobile phone terminal in this room, the equipment in room can lead to the decline of performance because of mobile phone terminal transmitting signal,
Threaten the safety in production operation of nuclear power plant；It should be understood that in actual application, passing through what is communicated with mobile phone terminal
Controller controls mobile phone terminal, by the transmission power adjustment of mobile phone terminal to preset transmission power；
Second of judgment module 400, connect first time judgment module 300, for judge installation isolating device after mobile phone
In normal working conditions, whether the corresponding field strength peak of mobile phone terminal minimum emissive power is greater than minimum immunity to interference to terminal
Value；Wherein, the basic thickness an of isolating device can be preset；If so, increase the thickness of isolating device, it is increased every time
Thickness can be preset thickness, such as " 5mm ", can be set according to different needs；If it is not, then terminating.Wherein, every
It can be the component for having isolation features made of the materials such as plastics, rubber from device.
Wherein, the final thickness for installing isolating device additional should meet the minimum transmitting function of the mobile phone terminal after installing isolating device additional
The corresponding field strength peak of rate is less than minimum anti-interference angle value.
Wherein, the installation site of the base station communicated with mobile phone terminal should meet its in the room that need to carry out wireless communication
The linear distance of all devices is greater than theoretical minimum range, when emitting signal to mobile phone terminal from base station for meeting, in room
Equipment runnability it is interference-free.
Further, the immunity to interference that the theoretical minimum range of base station and equipment in room meets all devices in room is wanted
It asks, is obtained by field strength calculation formula, field strength calculation formula is as follows:
Wherein, E is the anti-interference angle value of each equipment, and unit is every meter (V/m) of volt；K is constant, is passed in far field free space
It is actual emission power value that its numerical value of sowing time, which is equal to 7, P, and unit is watt (W), and d is distance of the equipment to base station.In practical application
In the process, E, P, k it is known that by above-mentioned formula can acquire equipment to base station distance d.
In conclusion realization is sufficiently meeting nuclear power plant the present invention provides a kind of method and system of anti-electromagnetic interference
Under the EMC Requirements of important equipment, user can carry out two-way communication using mobile phone terminal everywhere in corresponding room；First
The position of base station setting is obtained by theoretical calculation, when realizing that base station emits signal to mobile phone terminal, is met in room and is respectively set
Standby immunity to interference requirement；Secondly, by adjusting mobile phone terminal to Base Transmitter signal when transmission power, it is ensured that transmission power meets
The immunity to interference requirement of each equipment, if being unable to satisfy requirements, by reduction meet transmission power under regular service conditions or
It is that it meets immunity to interference requirement by setting up xegregating unit, so that realizing ensures do not generating electricity to nuclear power plant's important system equipment
In the case where magnetic disturbance, user can carry out the technical effect of two-way communication using mobile phone terminal everywhere in corresponding room.
It should be understood that above-described embodiment provides system when method is realized, only with the division of above-mentioned each functional module
Be illustrated, in practical application, can according to need and by above-mentioned function distribution by different functional modules, i.e., by equipment
Internal structure be divided into different functional modules, to complete all or part of the functions described above.In addition, above-mentioned implementation
The system and method embodiment that example provides belongs to same design, and specific implementation process is detailed in the description of embodiment of the method, here
It repeats no more.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of method of anti-electromagnetic interference characterized by comprising
Step S1, each anti-interference angle value of all devices in the room that need to be carried out wireless communication is collected, and is chosen described each anti-
Disturb the minimum anti-interference angle value in angle value；
Step S2, field strength measurement device is close to mobile phone terminal surface, in normal working conditions, mobile phone terminal emits function for measurement
Rate from high to low when the corresponding each field strength peak of each transmission power level；
Step S3, judge whether each field strength peak is all larger than the minimum anti-interference angle value, if it is not, then will be described each
The corresponding mobile phone terminal transmission power level of any field strength peak being less than in the minimum anti-interference angle value in field strength peak is made
For preset transmission power level, and by the transmission power adjustment of mobile phone terminal to preset transmission power level；If so, will be described
The transmission power adjustment of mobile phone terminal is to minimum emissive power value, and in the corresponding field of the mobile phone terminal minimum emissive power value
Strong peak, which is greater than at the mobile phone terminal position of the minimum anti-interference angle value, installs isolating device additional.
2. the method for anti-electromagnetic interference according to claim 1, which is characterized in that the method also includes:
Step S4, judgement install additional isolating device after mobile phone terminal in normal working conditions, mobile phone terminal minimum emissive power
It is worth whether corresponding field strength peak is greater than the minimum anti-interference angle value；If so, increase the thickness of the isolating device, if
It is no, then terminate.
3. the method for anti-electromagnetic interference according to claim 2, which is characterized in that the thickness for installing isolating device additional is answered
The corresponding field strength peak of minimum emissive power value for meeting the mobile phone terminal after installing isolating device additional is less than the minimum anti-interference
Angle value.
4. the method for anti-electromagnetic interference according to claim 3, which is characterized in that the base station communicated with the mobile phone terminal
Installation site and the linear distance of all devices in the room that need to carry out wireless communication be greater than theoretical minimum range.
5. the method for anti-electromagnetic interference according to claim 4, which is characterized in that the theory minimum range passes through theory
It calculates and obtains, meet the immunity to interference requirement of all devices in room.
6. the method for anti-electromagnetic interference according to claim 1, which is characterized in that the step S2 further include: by field strength
Measuring device is along mobile phone terminal surface 360 degree rotation, and all directions are corresponding when measuring mobile phone terminal transmission power from high to low
Each field strength peak.
7. a kind of system of anti-electromagnetic interference characterized by comprising
Anti-interference angle value collection module, for collecting each anti-interference angle value of all devices in the room that need to be carried out wireless communication, and
Choose the minimum anti-interference angle value in each anti-interference angle value；
Field strength measurement device is close to mobile phone terminal surface, for measuring in normal running conditions by field strength peak measurement module
Under, mobile phone terminal transmission power from high to low when the corresponding each field strength peak of each transmission power level；
First time judgment module connects the anti-interference angle value acquisition module and field strength peak measurement module, described for judging
Whether each field strength peak is all larger than the minimum anti-interference angle value, if it is not, will then be less than institute in each field strength peak
The corresponding mobile phone terminal transmission power level of any field strength peak in minimum anti-interference angle value is stated as preset transmission power level,
And by the transmission power adjustment of mobile phone terminal to preset transmission power level；If so, by the transmission power of the mobile phone terminal
Be adjusted to minimum emissive power value, and the corresponding field strength peak of the mobile phone terminal minimum emissive power value be greater than it is described most
Install isolating device at the mobile phone terminal position of small anti-interference angle value additional.
8. the system of anti-electromagnetic interference according to claim 7, which is characterized in that the system also includes:
Second of judgment module connects the first time judgment module, for judging that the mobile phone terminal after installation isolating device exists
Under normal running conditions, whether the corresponding field strength peak of mobile phone terminal minimum emissive power value is greater than the minimum immunity to interference
Value；If so, increasing the thickness of the isolating device.
9. the system of anti-electromagnetic interference according to claim 8, which is characterized in that the thickness for installing isolating device additional is answered
The corresponding field strength peak of minimum emissive power value for meeting the mobile phone terminal after installing isolating device additional is less than the minimum anti-interference
Angle value.
10. the system of anti-electromagnetic interference according to claim 9, which is characterized in that the base communicated with the mobile phone terminal
The installation site stood and the linear distance of all devices in the room that need to be carried out wireless communication are greater than theoretical minimum range.
11. the system of anti-electromagnetic interference according to claim 10, which is characterized in that the theory minimum range meets room
The immunity to interference requirement of interior all devices, is obtained by theoretical calculation.
12. the system of anti-electromagnetic interference according to claim 7, which is characterized in that the field strength peak measurement module
Further include: automatic rotating device connects field strength measurement device, for revolving field strength measurement device for 360 degree along mobile phone terminal surface
Turn, all directions corresponding each field strength peak when measuring mobile phone terminal transmission power from high to low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910422755.3A CN110267297A (en) | 2019-05-21 | 2019-05-21 | A kind of method and system of anti-electromagnetic interference |
Applications Claiming Priority (1)
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